地下燃气管网地理信息系统（GIS）不可以进行（）信息的查询。
A、竣工日期
B、施工单位
C、管径
D、燃气热值
参考答案：D
The young mother kept ______ the house with three children in it , because she wanted to keep it ______.
A．cleaning; clean
B．cleaning; cleaning
C．clean; clean
D．clean; cleaning
气特异而臭，刺激性强，不宜口尝的药材是
A．蛤蚧B．蟾酥C．牛黄D．麝香E．斑螫
